Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1987-08-17
1989-06-20
Levy, Stewart J.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
128653, G01R 3320
Patent
active
048412481
ABSTRACT:
Magnets (12) create a main magnetic field along a z-axis through an image region. A localized coil (D) is disposed in the image region at least to receive magnetic resonance signals from nuclei of the subject which have been induced to resonance. The localized coil includes an inner conductor (30), preferably a plate, which defines a current path extending along the z-axis. The inner conductor is mounted closely adjacent and parallel to a surface of the subject. An outer conductor (32), preferably also a plate, is mounted parallel to but further from the subject than the first conductor. A connecting member (34) interconnects a first end of the inner and outer conductors and is disposed perpendicular to the z-axis. A matching circuit (36) including capacitors (50) which define the resonant frequency of the coil are connected adjacent second ends of the inner and outer conductors. Because the nuclei induced to resonance within the z-axis magnetic field generate magnetic resonance components in the x-y plane, an optimal coupling is achieved to reception of the magnetic resonance signals.
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Mehdizadeh Mehrdad
Misic George J.
Patrick John L.
Levy Stewart J.
O'Shea Kevin D.
Picker International Inc.
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